Roll feed



0a. 19, 1948. F. KOCH 2,451,833

ROLL FEED Filed Aug. 22, 1947 2 Sheets-Sheet 1 FIG: 1

23 C) a I 24- FREDERICK KocH INVENTOR.

ATTORNEY.

Oct. 19, 1948. F. KOCH 2,451,833

ROLL FEED Filed Aug. 22, 1947 2 Sheets-Sheet 2 FREDERICK KocH INVENTOR.

ATTOR/VEX Patented Oct. 19, 1948 UNI TED. STATES PATENroFFICE U a2451,33 "I y l p ciated Patentees, Inc., Ampere,.N. J a corpo'rationof'New Jersey y i Appiication August 22, 1943, s nsinoqzjacas Theinvention herein disclosedrelates to roll feeds such as used with punchpresses and the like.

Objects of the invention are to simplify and .3 Claims; (or'zvr-I-ea). l

To efiect instant tripping of the feed atany time, ahandle "is providedon a cross shaft 33 having fixed thereoncams 34 in line with trip levers22. v

The handle shaft 33 is biased in the direction improve the mechanism forseparating the feed rolls and for automatically returning them to optoturn the cams '34 into the release or inactive erative, stock grippingrelation. positions shown in Fig. 1 by means of a spring Particularly itis a purpose of the invention to 35 coiled about the shaft fixed to theshaft at provide accessible and conveniently operable one end, 36, Fig:2, and fixed=to the supporting handle" mechanism for retaining the rollsin frame at the opposite end, at 31. V separated relation, which will beself-releasing Turning of the cam shaft 33 in the release diin characterso as" to allow return'of the rolls to rection is limited by a stop pin38 on the front operative relation without lag or delay.frame,engageable by a stop shoulder 39 on the Other desirable objectsattained by the invencam 34 at'thatend oftheshaft. tion are set forth orwill appearln the course Thecoaction-ofthese twostop elements 38, of thefollowing'specification. 39.""as shown' in""Fig. 1, serves topositionthe The drawings accompanyingb-and forming part handle 32 in an uprightrelation where it may be of the specification illustrate one of thepresent conveniently reached for quick-actuation of the commercialembodiments of the invention. feed'tripn I Structure, however, may bemodified and changed "Ihe cams '34, as more fullyshown' in Fig. 3, asregards the immediate disclosure without dehave'active ca S f c"extending o the parture from the true spirit and actual scope of stopshoulders 39 for engagement with the upper the invention as hereinafterdefined and claimed. edges of the trip levers at 4|, terminating in sub-Fig. 1 in the drawings is an end elevation of a stantially concentricholding portions 42. pair of feed rolls having the invention appliedWith this construction the handle is free to be thereto and shown withcertain parts broken turned in a right-handed direction and when soaway; turned the cam slopes 40 will force the trip levers Fig. 2 is apart sectional end elevation of the downward from the Fig. 1 to the Fig.3 po o mechanism; and in the latter relation the concentric portionsFig. 3 is a broken diagrammatical view il- 42 will come in contact withthe levers to hold lustrating cooperative relation of the parts. themlowered and to retain the cams and cam In the illustration upper andlower feed rolls shaft in the feed roll tripped position against the areindicated at 5, 6, the upper one journaled in tension of the returnspring 35. vertically slidable bearings 7 held down by caps At any timethe trip levers may be released by 8 and pull-down rods 9 extending downthrough simply starting the handle in the return directhe bearing headsI0 and tensioned by springs tion, sufiiciently to clear the concentricportions H about the lower ends of the rods. 42 to a point where thespring 35 will assert it- Intermittent feed motion is imparted to theself and carry the cam shaft the rest of the way rolls from anoscillating rock lever I: having a back to the release position shown inFig. 1. If one-way clutch connection at I3 with a gear I4, not releasedby hand as described, the trip levers the latter in mesh with the pinionIE on shaft will be automatically released at the first down I6 belowthe bottom roll and carrying a gear Il stroke of the press by the tripstud 30, Fig. 3, in mesh with gear l8 on the shaft 19 of the lowerengaging the connecting bar 29 of the trip levers roll, the latter gearalso in mesh with gear 20 fast to take the pressure of these levers oilthe holdon the upper roll shaft 2|. ing portions 42 of the cams 34.Immediately the Trip levers 22 are shown pivoted on the side cams arerelieved of the holding pressure applied frames at 23, equipped at theirinner ends with by trip levers 22, the return spring 25 will swingrounded leverage extensions 24 engaged beneath the cam shaft back toFig. 1, release position. lugs or shoulders 25 on levers 26 pivoted at21 and The stop pin 313 performs an additional func- -having openings 28loosely receiving the shaft tion in the illustration by being positionedfor enportions 2| of the upper roll. gagement by a limit shoulder 43 on.the upper edge The trip levers 22 are connected by a cross bar of thetrip levers 22, forward of the edge portion 29 adapted for engagement byan adjustable trip ,4! engaged by the cam and thus adapted to limit stud30 carried by some portion 3| of the press the upward swing of thetriplevers 22. head. Thus, as will be clear from Fig. 1, the stop pinholding engagement with the upper edges of the trip levers.

What is claimed is:

1. Roll feed mechanism comp i-sing separably mounted companion feedrolls; a triptleveriarranged to effect separation of said feed rolls, acam rotatable in engagement with said trip lever to effect actuation ofthe same, said cam'having a cam slope for effecting tripping movement ofsaid lever and a substantially concentric portion at the end, of saidcam slope ensa eable with the lever to. retain it in. the trippedposition and a spring for rotating the cam in the trip lever releasingdirection and operative to return the cam to. then-release position whenthe cam is relieved of pressure of the trip lever;- a stop, S oulder onthe cam at the beginning of said cam-slope and a stop pin engagea ble bysaid stop shoulder to position the vcam in a definite release position.v

2. Roll feed mechanism" comprising separably mounted companion ,feedrolls, a trip lever arranged to effect separation of said feed rolls, acam rotatable in engagement with aid trip lever to effect actuation ofthe same. said'cam having a cam slope for effecting tripping movement'ofi said lever and a substantially concentrioportion at the end of saidcam slope engageable withthe lever to retain it in the tripped positionanda spring for rotating the cam in the tripleverreleasing directionand'oper-ativeto return the 128m to the release position when the cam isrelieved of pressure of the trip lever, a stop shoulder on the cam atthe beginning of said cam slope and a stop pin engagea-ble by said stopshoulder to position the cam in a definite release position and a stopshoulder on the trip lever also engageable with said stop pin in thenon-tripping position of said lever.

3. Roll feed mechanism comprising separ-ably mounted companion feedrolls, a trip lever arranged to effect separation of said feed rolls, acam rotatable in engagement with said trip lever to effect actuation ofthe same, said cam having a cam slope for effecting tripping movement ofsaid lever and a substantially concentric portion at the end of said camslope engageable with the lever to retain it in the tripped position anda spring for rotating the cam in the trip lever releasing direction andoperative to return the cam .to the release position when the cam isrelieved of pressure of the trip lever, a stop shoulder on the cam atthe beginning of said cam slope, at stop pin engageable by said stopshoulder to position the cam in a definite release position and a stopshoulder on the trip lever also engageable with said stop pin in thenon-tripping position of said 1ever andsaidstop pin also engagea'ble bysaid cam slope to stop turning of the cam in the tripping directionafter engagement of the holding portion of the cam with said trip lever.

FREDERICK KOCH. I

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

